Specifications

TroubleshootingGuide

18|Page


ERRORCODE441:FLOWSENSO R
PartofanEasy‐Linksystem,themasterunitsignaledforanadditionalheaterto
activateanditdidnot.
1) Verifythatwaterisbeingsuppliedtotheheaterinerror.
2) Verifythatthewiresareconnectedtothecomputerboard.
3) Checktheinletfilterforanydebris.
Seep.23.
4) Checktheflowsensorfordebris.

ERRORCODE510:ABNORMALMAINAND/ORSOLENOI DGASVALVE
Drivingcircuitfaultforthemainorsolenoidgasvalves.
1) Ifthehotwaterisshutoff,butflamesarestillvisiblethroughtheburner
sightwindow,immediatelyshutoffgasandpowertotheunitand
contactthetechnicalservicedepartment. 
2) Checkthewireconnectionstothegas
valveassemblyforburnsor
cuts.

3) Iftheunitwasrecentlyrebuilt,makesurethateachgasvalvewireis
pluggedintotheproperplace.
4) Verifythatthesupplygaspressureiswithinthespecifiedlimits.
Toohighofaninletgaspressuremaycausethemaingasvalveto
jamorcouldbe
damaged.

ERRORCODE551:ABNORMALSOLENOID GASVA LVE
Drivingcircuitfaultforthesolenoidgasvalve.
1) Ifthehotwaterisshutoff,butflamesarestillvisiblethrough
thesightglass,immediatelyshutoffgasandpowertotheunit
andcontactthetechnicalservicedepartment.
2) Checkthewireconnectionstothegasvalveassemblyfor
burns
orcuts.

3) Iftheunitwasrecentlyrebuilt,makesurethateachgasvalve
wireispluggedintotheproperplace.
4) Verifythatthesupplygaspressureiswithinthespecified
limits.Toohighofaninletgaspressuremaycausethemain
gasvalvetojamorcouldbe
damaged.

ERRORCODE611:ABNORMALFANMOTOR
1) Turnoffpowersupply.
2) Checkfanmotorwiringforanybreakages,burnmarks
onthePCboard,ormoisture.Ifmoistureisfound,
allowconnectiontocompletelydrybeforeturning
powerbackon.
3) Checkfanhousingforwater.Iffound,pleasedrythe
fan,thentestheater.
4)
Toremovethefanmotor.
a. Turnoffthepowersupply.
Figure15
Figure16
Figure17
Figure18